I can't find the Dengates' review of the Don Henderson CDs online. I found a review by union leader & folksinger Maurie Mulheron:

Recommended Citation
Mulheron, Maurie, The songs of Don Henderson, Illawarra Unity - Journal of the Illawarra
Branch ofthe Australian Society for the Study of Labour History, 10(1), 2010, 79-80.
Available at:http://ro.uow.edu.au/unity/vol10/iss1/11